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gecko-dev/dom/system/OSFileConstants.cpp

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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "mozilla/DebugOnly.h"
#include "fcntl.h"
#include "errno.h"
#include "prsystem.h"
#if defined(XP_UNIX)
#include "unistd.h"
#include "dirent.h"
#include "sys/stat.h"
#endif // defined(XP_UNIX)
#if defined(XP_LINUX)
#include <linux/fadvise.h>
#endif // defined(XP_LINUX)
#if defined(XP_MACOSX)
#include "copyfile.h"
#endif // defined(XP_MACOSX)
#if defined(XP_WIN)
#include <windows.h>
#endif // defined(XP_WIN)
#include "jsapi.h"
#include "jsfriendapi.h"
#include "BindingUtils.h"
// Used to provide information on the OS
#include "nsThreadUtils.h"
#include "nsIObserverService.h"
#include "nsIObserver.h"
#include "nsDirectoryServiceUtils.h"
#include "nsIXULRuntime.h"
#include "nsXPCOMCIDInternal.h"
#include "nsServiceManagerUtils.h"
#include "nsString.h"
#include "nsAutoPtr.h"
#include "nsDirectoryServiceDefs.h"
#include "nsAppDirectoryServiceDefs.h"
#include "mozJSComponentLoader.h"
#include "OSFileConstants.h"
#include "nsIOSFileConstantsService.h"
#include "nsZipArchive.h"
#if defined(__DragonFly__) || defined(__FreeBSD__) \
|| defined(__NetBSD__) || defined(__OpenBSD__)
#define __dd_fd dd_fd
#endif
/**
* This module defines the basic libc constants (error numbers, open modes,
* etc.) used by OS.File and possibly other OS-bound JavaScript libraries.
*/
namespace mozilla {
// Use an anonymous namespace to hide the symbols and avoid any collision
// with, for instance, |extern bool gInitialized;|
namespace {
/**
* |true| if this module has been initialized, |false| otherwise
*/
bool gInitialized = false;
struct Paths {
/**
* The name of the directory holding all the libraries (libxpcom, libnss, etc.)
*/
nsString libDir;
nsString tmpDir;
nsString profileDir;
nsString localProfileDir;
/**
* The user's home directory
*/
nsString homeDir;
/**
* The user's desktop directory, if there is one. Otherwise this is
* the same as homeDir.
*/
nsString desktopDir;
#if defined(XP_WIN)
/**
* The user's application data directory.
*/
nsString winAppDataDir;
/**
* The programs subdirectory in the user's start menu directory.
*/
nsString winStartMenuProgsDir;
#endif // defined(XP_WIN)
#if defined(XP_MACOSX)
/**
* The user's Library directory.
*/
nsString macUserLibDir;
/**
* The Application directory, that stores applications installed in the
* system.
*/
nsString macLocalApplicationsDir;
#endif // defined(XP_MACOSX)
Paths()
{
libDir.SetIsVoid(true);
tmpDir.SetIsVoid(true);
profileDir.SetIsVoid(true);
localProfileDir.SetIsVoid(true);
homeDir.SetIsVoid(true);
desktopDir.SetIsVoid(true);
#if defined(XP_WIN)
winAppDataDir.SetIsVoid(true);
winStartMenuProgsDir.SetIsVoid(true);
#endif // defined(XP_WIN)
#if defined(XP_MACOSX)
macUserLibDir.SetIsVoid(true);
macLocalApplicationsDir.SetIsVoid(true);
#endif // defined(XP_MACOSX)
}
};
/**
* System directories.
*/
Paths* gPaths = NULL;
}
/**
* Return the path to one of the special directories.
*
* @param aKey The key to the special directory (e.g. "TmpD", "ProfD", ...)
* @param aOutPath The path to the special directory. In case of error,
* the string is set to void.
*/
nsresult GetPathToSpecialDir(const char *aKey, nsString& aOutPath)
{
nsCOMPtr<nsIFile> file;
nsresult rv = NS_GetSpecialDirectory(aKey, getter_AddRefs(file));
if (NS_FAILED(rv) || !file) {
return rv;
}
return file->GetPath(aOutPath);
}
/**
* In some cases, OSFileConstants may be instantiated before the
* profile is setup. In such cases, |OS.Constants.Path.profileDir| and
* |OS.Constants.Path.localProfileDir| are undefined. However, we want
* to ensure that this does not break existing code, so that future
* workers spawned after the profile is setup have these constants.
*
* For this purpose, we register an observer to set |gPaths->profileDir|
* and |gPaths->localProfileDir| once the profile is setup.
*/
class DelayedPathSetter MOZ_FINAL: public nsIObserver
{
NS_DECL_ISUPPORTS
NS_DECL_NSIOBSERVER
DelayedPathSetter() {}
};
NS_IMPL_ISUPPORTS1(DelayedPathSetter, nsIObserver)
NS_IMETHODIMP
DelayedPathSetter::Observe(nsISupports*, const char * aTopic, const PRUnichar*)
{
if (gPaths == nullptr) {
// Initialization of gPaths has not taken place, something is wrong,
// don't make things worse.
return NS_OK;
}
nsresult rv = GetPathToSpecialDir(NS_APP_USER_PROFILE_50_DIR, gPaths->profileDir);
if (NS_FAILED(rv)) {
return rv;
}
rv = GetPathToSpecialDir(NS_APP_USER_PROFILE_LOCAL_50_DIR, gPaths->localProfileDir);
if (NS_FAILED(rv)) {
return rv;
}
return NS_OK;
}
/**
* Perform the part of initialization that can only be
* executed on the main thread.
*/
nsresult InitOSFileConstants()
{
MOZ_ASSERT(NS_IsMainThread());
if (gInitialized) {
return NS_OK;
}
gInitialized = true;
nsAutoPtr<Paths> paths(new Paths);
// Initialize paths->libDir
nsCOMPtr<nsIFile> file;
nsresult rv = NS_GetSpecialDirectory("XpcomLib", getter_AddRefs(file));
if (NS_FAILED(rv)) {
return rv;
}
nsCOMPtr<nsIFile> libDir;
rv = file->GetParent(getter_AddRefs(libDir));
if (NS_FAILED(rv)) {
return rv;
}
rv = libDir->GetPath(paths->libDir);
if (NS_FAILED(rv)) {
return rv;
}
// Setup profileDir and localProfileDir immediately if possible (we
// assume that NS_APP_USER_PROFILE_50_DIR and
// NS_APP_USER_PROFILE_LOCAL_50_DIR are set simultaneously)
rv = GetPathToSpecialDir(NS_APP_USER_PROFILE_50_DIR, paths->profileDir);
if (NS_SUCCEEDED(rv)) {
rv = GetPathToSpecialDir(NS_APP_USER_PROFILE_LOCAL_50_DIR, paths->localProfileDir);
}
// Otherwise, delay setup of profileDir/localProfileDir until they
// become available.
if (NS_FAILED(rv)) {
nsCOMPtr<nsIObserverService> obsService = do_GetService(NS_OBSERVERSERVICE_CONTRACTID, &rv);
if (NS_FAILED(rv)) {
return rv;
}
nsRefPtr<DelayedPathSetter> pathSetter = new DelayedPathSetter();
rv = obsService->AddObserver(pathSetter, "profile-do-change", false);
if (NS_FAILED(rv)) {
return rv;
}
}
// For other directories, ignore errors (they may be undefined on
// some platforms or in non-Firefox embeddings of Gecko).
GetPathToSpecialDir(NS_OS_TEMP_DIR, paths->tmpDir);
GetPathToSpecialDir(NS_OS_HOME_DIR, paths->homeDir);
GetPathToSpecialDir(NS_OS_DESKTOP_DIR, paths->desktopDir);
#if defined(XP_WIN)
GetPathToSpecialDir(NS_WIN_APPDATA_DIR, paths->winAppDataDir);
GetPathToSpecialDir(NS_WIN_PROGRAMS_DIR, paths->winStartMenuProgsDir);
#endif // defined(XP_WIN)
#if defined(XP_MACOSX)
GetPathToSpecialDir(NS_MAC_USER_LIB_DIR, paths->macUserLibDir);
GetPathToSpecialDir(NS_OSX_LOCAL_APPLICATIONS_DIR, paths->macLocalApplicationsDir);
#endif // defined(XP_MACOSX)
gPaths = paths.forget();
return NS_OK;
}
/**
* Perform the cleaning up that can only be executed on the main thread.
*/
void CleanupOSFileConstants()
{
MOZ_ASSERT(NS_IsMainThread());
if (!gInitialized) {
return;
}
gInitialized = false;
delete gPaths;
}
/**
* Define a simple read-only property holding an integer.
*
* @param name The name of the constant. Used both as the JS name for the
* constant and to access its value. Must be defined.
*
* Produces a |ConstantSpec|.
*/
#define INT_CONSTANT(name) \
{ #name, INT_TO_JSVAL(name) }
/**
* End marker for ConstantSpec
*/
#define PROP_END { NULL, JS::UndefinedValue() }
// Define missing constants for Android
#if !defined(S_IRGRP)
#define S_IXOTH 0001
#define S_IWOTH 0002
#define S_IROTH 0004
#define S_IRWXO 0007
#define S_IXGRP 0010
#define S_IWGRP 0020
#define S_IRGRP 0040
#define S_IRWXG 0070
#define S_IXUSR 0100
#define S_IWUSR 0200
#define S_IRUSR 0400
#define S_IRWXU 0700
#endif // !defined(S_IRGRP)
/**
* The properties defined in libc.
*
* If you extend this list of properties, please
* separate categories ("errors", "open", etc.),
* keep properties organized by alphabetical order
* and #ifdef-away properties that are not portable.
*/
static const dom::ConstantSpec gLibcProperties[] =
{
// Arguments for open
INT_CONSTANT(O_APPEND),
INT_CONSTANT(O_CREAT),
#if defined(O_DIRECTORY)
INT_CONSTANT(O_DIRECTORY),
#endif // defined(O_DIRECTORY)
#if defined(O_EVTONLY)
INT_CONSTANT(O_EVTONLY),
#endif // defined(O_EVTONLY)
INT_CONSTANT(O_EXCL),
#if defined(O_EXLOCK)
INT_CONSTANT(O_EXLOCK),
#endif // defined(O_EXLOCK)
#if defined(O_LARGEFILE)
INT_CONSTANT(O_LARGEFILE),
#endif // defined(O_LARGEFILE)
#if defined(O_NOFOLLOW)
INT_CONSTANT(O_NOFOLLOW),
#endif // defined(O_NOFOLLOW)
#if defined(O_NONBLOCK)
INT_CONSTANT(O_NONBLOCK),
#endif // defined(O_NONBLOCK)
INT_CONSTANT(O_RDONLY),
INT_CONSTANT(O_RDWR),
#if defined(O_RSYNC)
INT_CONSTANT(O_RSYNC),
#endif // defined(O_RSYNC)
#if defined(O_SHLOCK)
INT_CONSTANT(O_SHLOCK),
#endif // defined(O_SHLOCK)
#if defined(O_SYMLINK)
INT_CONSTANT(O_SYMLINK),
#endif // defined(O_SYMLINK)
#if defined(O_SYNC)
INT_CONSTANT(O_SYNC),
#endif // defined(O_SYNC)
INT_CONSTANT(O_TRUNC),
INT_CONSTANT(O_WRONLY),
#if defined(AT_EACCESS)
INT_CONSTANT(AT_EACCESS),
#endif //defined(AT_EACCESS)
#if defined(AT_FDCWD)
INT_CONSTANT(AT_FDCWD),
#endif //defined(AT_FDCWD)
#if defined(AT_SYMLINK_NOFOLLOW)
INT_CONSTANT(AT_SYMLINK_NOFOLLOW),
#endif //defined(AT_SYMLINK_NOFOLLOW)
#if defined(POSIX_FADV_SEQUENTIAL)
INT_CONSTANT(POSIX_FADV_SEQUENTIAL),
#endif //defined(POSIX_FADV_SEQUENTIAL)
// access
#if defined(F_OK)
INT_CONSTANT(F_OK),
INT_CONSTANT(R_OK),
INT_CONSTANT(W_OK),
INT_CONSTANT(X_OK),
#endif // defined(F_OK)
// modes
INT_CONSTANT(S_IRGRP),
INT_CONSTANT(S_IROTH),
INT_CONSTANT(S_IRUSR),
INT_CONSTANT(S_IRWXG),
INT_CONSTANT(S_IRWXO),
INT_CONSTANT(S_IRWXU),
INT_CONSTANT(S_IWGRP),
INT_CONSTANT(S_IWOTH),
INT_CONSTANT(S_IWUSR),
INT_CONSTANT(S_IXOTH),
INT_CONSTANT(S_IXGRP),
INT_CONSTANT(S_IXUSR),
// seek
INT_CONSTANT(SEEK_CUR),
INT_CONSTANT(SEEK_END),
INT_CONSTANT(SEEK_SET),
// copyfile
#if defined(COPYFILE_DATA)
INT_CONSTANT(COPYFILE_DATA),
INT_CONSTANT(COPYFILE_EXCL),
INT_CONSTANT(COPYFILE_XATTR),
INT_CONSTANT(COPYFILE_STAT),
INT_CONSTANT(COPYFILE_ACL),
INT_CONSTANT(COPYFILE_MOVE),
#endif // defined(COPYFILE_DATA)
// error values
INT_CONSTANT(EACCES),
INT_CONSTANT(EAGAIN),
INT_CONSTANT(EBADF),
INT_CONSTANT(EEXIST),
INT_CONSTANT(EFAULT),
INT_CONSTANT(EFBIG),
INT_CONSTANT(EINVAL),
INT_CONSTANT(EIO),
INT_CONSTANT(EISDIR),
#if defined(ELOOP) // not defined with VC9
INT_CONSTANT(ELOOP),
#endif // defined(ELOOP)
INT_CONSTANT(EMFILE),
INT_CONSTANT(ENAMETOOLONG),
INT_CONSTANT(ENFILE),
INT_CONSTANT(ENOENT),
INT_CONSTANT(ENOMEM),
INT_CONSTANT(ENOSPC),
INT_CONSTANT(ENOTDIR),
INT_CONSTANT(ENXIO),
#if defined(EOPNOTSUPP) // not defined with VC 9
INT_CONSTANT(EOPNOTSUPP),
#endif // defined(EOPNOTSUPP)
#if defined(EOVERFLOW) // not defined with VC 9
INT_CONSTANT(EOVERFLOW),
#endif // defined(EOVERFLOW)
INT_CONSTANT(EPERM),
INT_CONSTANT(ERANGE),
#if defined(ETIMEDOUT) // not defined with VC 9
INT_CONSTANT(ETIMEDOUT),
#endif // defined(ETIMEDOUT)
#if defined(EWOULDBLOCK) // not defined with VC 9
INT_CONSTANT(EWOULDBLOCK),
#endif // defined(EWOULDBLOCK)
INT_CONSTANT(EXDEV),
#if defined(DT_UNKNOWN)
// Constants for |readdir|
INT_CONSTANT(DT_UNKNOWN),
INT_CONSTANT(DT_FIFO),
INT_CONSTANT(DT_CHR),
INT_CONSTANT(DT_DIR),
INT_CONSTANT(DT_BLK),
INT_CONSTANT(DT_REG),
INT_CONSTANT(DT_LNK),
INT_CONSTANT(DT_SOCK),
#endif // defined(DT_UNKNOWN)
#if defined(S_IFIFO)
// Constants for |stat|
INT_CONSTANT(S_IFMT),
INT_CONSTANT(S_IFIFO),
INT_CONSTANT(S_IFCHR),
INT_CONSTANT(S_IFDIR),
INT_CONSTANT(S_IFBLK),
INT_CONSTANT(S_IFREG),
INT_CONSTANT(S_IFLNK),
INT_CONSTANT(S_IFSOCK),
#endif // defined(S_IFIFO)
// Constants used to define data structures
//
// Many data structures have different fields/sizes/etc. on
// various OSes / versions of the same OS / platforms. For these
// data structures, we need to compute and export from C the size
// and, if necessary, the offset of fields, so as to be able to
// define the structure in JS.
#if defined(XP_UNIX)
// The size of |mode_t|.
{ "OSFILE_SIZEOF_MODE_T", INT_TO_JSVAL(sizeof (mode_t)) },
// The size of |gid_t|.
{ "OSFILE_SIZEOF_GID_T", INT_TO_JSVAL(sizeof (gid_t)) },
// The size of |uid_t|.
{ "OSFILE_SIZEOF_UID_T", INT_TO_JSVAL(sizeof (uid_t)) },
// The size of |time_t|.
{ "OSFILE_SIZEOF_TIME_T", INT_TO_JSVAL(sizeof (time_t)) },
// Defining |dirent|.
// Size
{ "OSFILE_SIZEOF_DIRENT", INT_TO_JSVAL(sizeof (dirent)) },
// Offset of field |d_name|.
{ "OSFILE_OFFSETOF_DIRENT_D_NAME", INT_TO_JSVAL(offsetof (struct dirent, d_name)) },
// An upper bound to the length of field |d_name| of struct |dirent|.
// (may not be exact, depending on padding).
{ "OSFILE_SIZEOF_DIRENT_D_NAME", INT_TO_JSVAL(sizeof (struct dirent) - offsetof (struct dirent, d_name)) },
#if defined(DT_UNKNOWN)
// Position of field |d_type| in |dirent|
// Not strictly posix, but seems defined on all platforms
// except mingw32.
{ "OSFILE_OFFSETOF_DIRENT_D_TYPE", INT_TO_JSVAL(offsetof (struct dirent, d_type)) },
#endif // defined(DT_UNKNOWN)
// Under MacOS X and BSDs, |dirfd| is a macro rather than a
// function, so we need a little help to get it to work
#if defined(dirfd)
{ "OSFILE_SIZEOF_DIR", INT_TO_JSVAL(sizeof (DIR)) },
{ "OSFILE_OFFSETOF_DIR_DD_FD", INT_TO_JSVAL(offsetof (DIR, __dd_fd)) },
#endif
// Defining |stat|
{ "OSFILE_SIZEOF_STAT", INT_TO_JSVAL(sizeof (struct stat)) },
{ "OSFILE_OFFSETOF_STAT_ST_MODE", INT_TO_JSVAL(offsetof (struct stat, st_mode)) },
{ "OSFILE_OFFSETOF_STAT_ST_UID", INT_TO_JSVAL(offsetof (struct stat, st_uid)) },
{ "OSFILE_OFFSETOF_STAT_ST_GID", INT_TO_JSVAL(offsetof (struct stat, st_gid)) },
{ "OSFILE_OFFSETOF_STAT_ST_SIZE", INT_TO_JSVAL(offsetof (struct stat, st_size)) },
#if defined(HAVE_ST_ATIMESPEC)
{ "OSFILE_OFFSETOF_STAT_ST_ATIME", INT_TO_JSVAL(offsetof (struct stat, st_atimespec)) },
{ "OSFILE_OFFSETOF_STAT_ST_MTIME", INT_TO_JSVAL(offsetof (struct stat, st_mtimespec)) },
{ "OSFILE_OFFSETOF_STAT_ST_CTIME", INT_TO_JSVAL(offsetof (struct stat, st_ctimespec)) },
#else
{ "OSFILE_OFFSETOF_STAT_ST_ATIME", INT_TO_JSVAL(offsetof (struct stat, st_atime)) },
{ "OSFILE_OFFSETOF_STAT_ST_MTIME", INT_TO_JSVAL(offsetof (struct stat, st_mtime)) },
{ "OSFILE_OFFSETOF_STAT_ST_CTIME", INT_TO_JSVAL(offsetof (struct stat, st_ctime)) },
#endif // defined(HAVE_ST_ATIME)
// Several OSes have a birthtime field. For the moment, supporting only Darwin.
#if defined(_DARWIN_FEATURE_64_BIT_INODE)
{ "OSFILE_OFFSETOF_STAT_ST_BIRTHTIME", INT_TO_JSVAL(offsetof (struct stat, st_birthtime)) },
#endif // defined(_DARWIN_FEATURE_64_BIT_INODE)
#endif // defined(XP_UNIX)
// System configuration
// Under MacOSX, to avoid using deprecated functions that do not
// match the constants we define in this object (including
// |sizeof|/|offsetof| stuff, but not only), for a number of
// functions, we need to adapt the name of the symbols we are using,
// whenever macro _DARWIN_FEATURE_64_BIT_INODE is set. We export
// this value to be able to do so from JavaScript.
#if defined(_DARWIN_FEATURE_64_BIT_INODE)
{ "_DARWIN_FEATURE_64_BIT_INODE", INT_TO_JSVAL(1) },
#endif // defined(_DARWIN_FEATURE_64_BIT_INODE)
// Similar feature for Linux
#if defined(_STAT_VER)
INT_CONSTANT(_STAT_VER),
#endif // defined(_STAT_VER)
PROP_END
};
#if defined(XP_WIN)
/**
* The properties defined in windows.h.
*
* If you extend this list of properties, please
* separate categories ("errors", "open", etc.),
* keep properties organized by alphabetical order
* and #ifdef-away properties that are not portable.
*/
static const dom::ConstantSpec gWinProperties[] =
{
// FormatMessage flags
INT_CONSTANT(FORMAT_MESSAGE_FROM_SYSTEM),
INT_CONSTANT(FORMAT_MESSAGE_IGNORE_INSERTS),
// The max length of paths
INT_CONSTANT(MAX_PATH),
// CreateFile desired access
INT_CONSTANT(GENERIC_ALL),
INT_CONSTANT(GENERIC_EXECUTE),
INT_CONSTANT(GENERIC_READ),
INT_CONSTANT(GENERIC_WRITE),
// CreateFile share mode
INT_CONSTANT(FILE_SHARE_DELETE),
INT_CONSTANT(FILE_SHARE_READ),
INT_CONSTANT(FILE_SHARE_WRITE),
// CreateFile creation disposition
INT_CONSTANT(CREATE_ALWAYS),
INT_CONSTANT(CREATE_NEW),
INT_CONSTANT(OPEN_ALWAYS),
INT_CONSTANT(OPEN_EXISTING),
INT_CONSTANT(TRUNCATE_EXISTING),
// CreateFile attributes
INT_CONSTANT(FILE_ATTRIBUTE_ARCHIVE),
INT_CONSTANT(FILE_ATTRIBUTE_DIRECTORY),
INT_CONSTANT(FILE_ATTRIBUTE_NORMAL),
INT_CONSTANT(FILE_ATTRIBUTE_READONLY),
INT_CONSTANT(FILE_ATTRIBUTE_REPARSE_POINT),
INT_CONSTANT(FILE_ATTRIBUTE_TEMPORARY),
INT_CONSTANT(FILE_FLAG_BACKUP_SEMANTICS),
// CreateFile error constant
{ "INVALID_HANDLE_VALUE", INT_TO_JSVAL(INT_PTR(INVALID_HANDLE_VALUE)) },
// CreateFile flags
INT_CONSTANT(FILE_FLAG_DELETE_ON_CLOSE),
// SetFilePointer methods
INT_CONSTANT(FILE_BEGIN),
INT_CONSTANT(FILE_CURRENT),
INT_CONSTANT(FILE_END),
// SetFilePointer error constant
INT_CONSTANT(INVALID_SET_FILE_POINTER),
// File attributes
INT_CONSTANT(FILE_ATTRIBUTE_DIRECTORY),
// MoveFile flags
INT_CONSTANT(MOVEFILE_COPY_ALLOWED),
INT_CONSTANT(MOVEFILE_REPLACE_EXISTING),
// Errors
INT_CONSTANT(ERROR_ACCESS_DENIED),
INT_CONSTANT(ERROR_DIR_NOT_EMPTY),
INT_CONSTANT(ERROR_FILE_EXISTS),
INT_CONSTANT(ERROR_ALREADY_EXISTS),
INT_CONSTANT(ERROR_FILE_NOT_FOUND),
INT_CONSTANT(ERROR_NO_MORE_FILES),
INT_CONSTANT(ERROR_PATH_NOT_FOUND),
PROP_END
};
#endif // defined(XP_WIN)
/**
* Get a field of an object as an object.
*
* If the field does not exist, create it. If it exists but is not an
* object, throw a JS error.
*/
JSObject *GetOrCreateObjectProperty(JSContext *cx, JS::Handle<JSObject*> aObject,
const char *aProperty)
{
JS::Rooted<JS::Value> val(cx);
if (!JS_GetProperty(cx, aObject, aProperty, &val)) {
return NULL;
}
if (!val.isUndefined()) {
if (val.isObject()) {
return &val.toObject();
}
JS_ReportErrorNumber(cx, js_GetErrorMessage, NULL,
JSMSG_UNEXPECTED_TYPE, aProperty, "not an object");
return NULL;
}
return JS_DefineObject(cx, aObject, aProperty, NULL, NULL, JSPROP_ENUMERATE);
}
/**
* Set a property of an object from a nsString.
*
* If the nsString is void (i.e. IsVoid is true), do nothing.
*/
bool SetStringProperty(JSContext *cx, JS::Handle<JSObject*> aObject, const char *aProperty,
const nsString aValue)
{
if (aValue.IsVoid()) {
return true;
}
JSString* strValue = JS_NewUCStringCopyZ(cx, aValue.get());
NS_ENSURE_TRUE(strValue, false);
JS::Rooted<JS::Value> valValue(cx, STRING_TO_JSVAL(strValue));
return JS_SetProperty(cx, aObject, aProperty, valValue);
}
/**
* Define OS-specific constants.
*
* This function creates or uses JS object |OS.Constants| to store
* all its constants.
*/
bool DefineOSFileConstants(JSContext *cx, JS::Handle<JSObject*> global)
{
MOZ_ASSERT(gInitialized);
if (gPaths == NULL) {
// If an initialization error was ignored, we may end up with
// |gInitialized == true| but |gPaths == NULL|. We cannot
// |MOZ_ASSERT| this, as this would kill precompile_cache.js,
// so we simply return an error.
JS_ReportErrorNumber(cx, js_GetErrorMessage, NULL,
JSMSG_CANT_OPEN, "OSFileConstants", "initialization has failed");
return false;
}
JS::Rooted<JSObject*> objOS(cx);
if (!(objOS = GetOrCreateObjectProperty(cx, global, "OS"))) {
return false;
}
JS::Rooted<JSObject*> objConstants(cx);
if (!(objConstants = GetOrCreateObjectProperty(cx, objOS, "Constants"))) {
return false;
}
// Build OS.Constants.libc
JS::Rooted<JSObject*> objLibc(cx);
if (!(objLibc = GetOrCreateObjectProperty(cx, objConstants, "libc"))) {
return false;
}
if (!dom::DefineConstants(cx, objLibc, gLibcProperties)) {
return false;
}
#if defined(XP_WIN)
// Build OS.Constants.Win
JS::Rooted<JSObject*> objWin(cx);
if (!(objWin = GetOrCreateObjectProperty(cx, objConstants, "Win"))) {
return false;
}
if (!dom::DefineConstants(cx, objWin, gWinProperties)) {
return false;
}
#endif // defined(XP_WIN)
// Build OS.Constants.Sys
JS::Rooted<JSObject*> objSys(cx);
if (!(objSys = GetOrCreateObjectProperty(cx, objConstants, "Sys"))) {
return false;
}
nsCOMPtr<nsIXULRuntime> runtime = do_GetService(XULRUNTIME_SERVICE_CONTRACTID);
if (runtime) {
nsAutoCString os;
DebugOnly<nsresult> rv = runtime->GetOS(os);
MOZ_ASSERT(NS_SUCCEEDED(rv));
JSString* strVersion = JS_NewStringCopyZ(cx, os.get());
if (!strVersion) {
return false;
}
JS::Rooted<JS::Value> valVersion(cx, STRING_TO_JSVAL(strVersion));
if (!JS_SetProperty(cx, objSys, "Name", valVersion)) {
return false;
}
}
#if defined(DEBUG)
JS::Rooted<JS::Value> valDebug(cx, JSVAL_TRUE);
if (!JS_SetProperty(cx, objSys, "DEBUG", valDebug)) {
return false;
}
#endif
// Build OS.Constants.Path
JS::Rooted<JSObject*> objPath(cx);
if (!(objPath = GetOrCreateObjectProperty(cx, objConstants, "Path"))) {
return false;
}
// Locate libxul
{
nsAutoString xulPath(gPaths->libDir);
xulPath.Append(PR_GetDirectorySeparator());
#if defined(XP_MACOSX)
// Under MacOS X, for some reason, libxul is called simply "XUL"
xulPath.Append(NS_LITERAL_STRING("XUL"));
#else
// On other platforms, libxul is a library "xul" with regular
// library prefix/suffix
xulPath.Append(NS_LITERAL_STRING(DLL_PREFIX));
xulPath.Append(NS_LITERAL_STRING("xul"));
xulPath.Append(NS_LITERAL_STRING(DLL_SUFFIX));
#endif // defined(XP_MACOSX)
if (!SetStringProperty(cx, objPath, "libxul", xulPath)) {
return false;
}
}
if (!SetStringProperty(cx, objPath, "libDir", gPaths->libDir)) {
return false;
}
if (!SetStringProperty(cx, objPath, "tmpDir", gPaths->tmpDir)) {
return false;
}
// Configure profileDir only if it is available at this stage
if (!gPaths->profileDir.IsVoid()
&& !SetStringProperty(cx, objPath, "profileDir", gPaths->profileDir)) {
return false;
}
// Configure localProfileDir only if it is available at this stage
if (!gPaths->localProfileDir.IsVoid()
&& !SetStringProperty(cx, objPath, "localProfileDir", gPaths->localProfileDir)) {
return false;
}
if (!SetStringProperty(cx, objPath, "homeDir", gPaths->homeDir)) {
return false;
}
if (!SetStringProperty(cx, objPath, "desktopDir", gPaths->desktopDir)) {
return false;
}
#if defined(XP_WIN)
if (!SetStringProperty(cx, objPath, "winAppDataDir", gPaths->winAppDataDir)) {
return false;
}
if (!SetStringProperty(cx, objPath, "winStartMenuProgsDir", gPaths->winStartMenuProgsDir)) {
return false;
}
#endif // defined(XP_WIN)
#if defined(XP_MACOSX)
if (!SetStringProperty(cx, objPath, "macUserLibDir", gPaths->macUserLibDir)) {
return false;
}
if (!SetStringProperty(cx, objPath, "macLocalApplicationsDir", gPaths->macLocalApplicationsDir)) {
return false;
}
#endif // defined(XP_MACOSX)
return true;
}
NS_IMPL_ISUPPORTS1(OSFileConstantsService, nsIOSFileConstantsService)
OSFileConstantsService::OSFileConstantsService()
{
MOZ_ASSERT(NS_IsMainThread());
}
OSFileConstantsService::~OSFileConstantsService()
{
mozilla::CleanupOSFileConstants();
}
NS_IMETHODIMP
OSFileConstantsService::Init(JSContext *aCx)
{
nsresult rv = mozilla::InitOSFileConstants();
if (NS_FAILED(rv)) {
return rv;
}
mozJSComponentLoader* loader = mozJSComponentLoader::Get();
JS::Rooted<JSObject*> targetObj(aCx);
rv = loader->FindTargetObject(aCx, &targetObj);
NS_ENSURE_SUCCESS(rv, rv);
if (!mozilla::DefineOSFileConstants(aCx, targetObj)) {
return NS_ERROR_FAILURE;
}
return NS_OK;
}
} // namespace mozilla
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